Technology Backgrounder
10GbE 26-port switch
Essential Ethernet Switch Features for Data Centers
Congestion management, priority PAUSE, and other capabilities in the Fujitsu MB86C69RBC switch chip
Fujitsu Microelectronics America, Inc.
April 2008
| Contents | |
| Introduction | 2 |
| Data center trends drive bandwidth requirements | 2 |
| Overview of MB86C69RBC Quality of Service Features | 2 |
| Input Buffer | 3 |
| Ingress Early Drop | 4 |
| Metering | 5 |
| Ingress Scheduler | 6 |
| Congestion Management | 6 |
| PAUSE and Priority Pause | 8 |
| Summary | 9 |
Introduction
As today’s trends drive the demand for increasing bandwidth in data centers, Ethernet switches must respond with the ability to use the available bandwidth effectively. Congestion management is particularly important, along with advanced quality-of-service (QoS) features that enable the switches to maximize throughput for priority traffic.
This technology backgrounder profiles the capabilities of the Fujitsu MB86C69RBC Ethernet switch chip with a focus on data center requirements. To understand why these capabilities are vital, it is useful to begin with an overview of data center trends.
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